The point of my simplified sketch was not to capture the facts and circumstances of the video but to provide a geometric illustration that the definition of "ahead" being defined by each individual's chosen line as fundamentally flawed. That it also showed that skier B was ahead by reference to the direction of the slope and thud the direction of skier A at t0 was a useful secondary point.
I had that exact situation in that diagram happen to me this past season.
I was skiing the more direct route nearer the treeline and I am keeping an eye on a skier to my left as I make my
turns down the fall line (my path down the hill is maybe 15 yards wide left to right and the slope is maybe 100 yards wide) We are traveling at about the same speed, not fast, not slow. There are no other skiers in view.
The other skier then makes a turn to the right diagonally across the fall line - and just keeps on coming in my direction - right at me. I am thinking he will turn, he will turn.......but he doesn't. Just keeps coming towards me until he is about ten feet away when I yell at him and he still bumps into me.
Had nothing to do with who was ahead of who - it was a total absence of situational awareness on the other skiers part.
The other skier then makes a turn to the right diagonally across the fall line - and just keeps on coming in my direction - right at me. I am thinking he will turn, he will turn.......but he doesn't. Just keeps coming towards me until he is about ten feet away when I yell at him and he still bumps into me.
Had nothing to do with who was ahead of who - it was a total absence of situational awareness on the other skiers part.